Combi Circuit - Power Amplifier Part - Philips MC-i200/37 Service Manual

COMBI CIRCUIT - POWER AMPLIFIER PART

1 2 3
A
TO SUPPLY MAINS
1302
6325
+50V
1
RES
1N4003
2
B1 B1
3
GND
B
4
A1
A1
5
GND
6
A1
7
C1 C1
8
GND
9
C1
EH-B
C
AMP_LEFT
AMP_MUTE
D
E
GND_A
F
AMP_ON
G
H
DC voltages measured in Tuner mode.
# : Provision
Note : Some values may varies, see respective parts list for correct value.
I
3139 118 55910...8239 210 91641...for 3479 pt1 dd wk0217
1 2 3
9-6
4 5 6
7301
3301
AN7591
220R
GND_A
6 STBY
4.7V
1 RF
15.6V
4 NF1
1.2V
TO_VC_LEFT
POWER AMPLIFIER
LCH
3305 3336
0V
470R 5K6
2K2
-1.8V
3379
7328
BC817-25
0V
GND_A
C1
6323
1N4148
7302
3302
AN7591
220R
GND_A
3300
6 STBY
4.7V
3K9
1 RF
15.6V
4 NF1
1.2V
TO_VC_RIGHT
POWER AMPLIFIER
RCH
AMP_RIGHT 3306 3337
470R 5K6
0V
AMP_MUTE 2K2
-1.8V
3380
7329
BC817-25 0V
GND_A
4 5 6
7 8 9
A1
Overvoltage Protection C1
6331
NTC_BASE 3377
47K
1N4148
1301
F3.15AL
1.2V 16.7V 14.3V
2 12 11
NF2 VCC B2
3309
INPUT DRIVER SEPP OUTP O2 10
4R7
CIRCUIT 8.3V
CIRCUIT CIRCUIT
5303
1u
RIPPLE PROTECTION
FILTER
CIRCUITS
5301
1u
O1 7
INPUT DRIVER SEPP OUTP
3311
CIRCUIT CIRCUIT CIRCUIT 8.3V
4R7
IN GND1 GND2 B1
5 3 9 8
0V 0V 0V 14.2V
# 6311
2315
0300
4n7
1N4003
9261
CL_DET
GND_A
2300
0V
10u 3342
7300 0.6V
BC847B
10K
0V
GND_A
1300
F3.15AL
1.2V 16.7V 14.3V
2 12 11
NF2 VCC B2
3310
INPUT DRIVER SEPP OUTP O2 10 8.3V
4R7
CIRCUIT
CIRCUIT CIRCUIT
5302
1u
RIPPLE PROTECTION
FILTER
CIRCUITS
5300
1u
O1 7
INPUT DRIVER SEPP OUTP 8.3V
3312
CIRCUIT CIRCUIT CIRCUIT
4R7
IN GND1 GND2 B1
5 3 9 8
0V 0V 0V 14.2V
2316
4n7
GND_A
7 8 9
9-6
10 11 12
B1
43.0V
7307 43.2V
BC856B
A1
16.7V
3318
35.6V
3K3
43.1V
STP16NE06
7304
7309 BC856B 43.3V
24.0V
16.8V
STP16NE06
7310
3328
3327
16.7V
16.7V
4K7
4K7
16.8V
3326
4K7
6307
BZX79-B3V9
3323
47K
8.5V
7313
7.9V
BC857B
1.6V
SPEAKER
1307-B
YKD21-0026
4
+
3
-
2
-
1
+
YKD21-0026
2318 2317
1307-A
100n 100n
A1
Clipping Detection
35.5V
7326
BC856B
34.8V
3366
26.5V
AMP_CLIP
10K
CL_DET
10 11 12
0300 D8
13
1300 F7
1301 B7
1302 B1
+50V
1307-A F12
1307-B E12
2300 E6
2301 B5
2302 F5
2303 B5
2304 F5
A
2305 B6
2306 F5
2307 D6
2308 H6
2309 B7
2310 F7
2311 B8
2312 F8
2313 C8
2314 G8
2315 D7
2316 H7
2317 F12
B
2318 F11
2319 F11
2320 F11
7308 2321 F12
7.8V
BC847B
2322 F11
2324 B13
2333 G5
13.0V
2334 C2
2335 C2
2336 C2
2340 I12
2341 B3
C
3300 G3
3301 B5
3302 F5
3303 B6
3304 F5
3305 C3
3306 G5
3307 D6
3308 H6
3309 B8
3310 F8
3311 C8
3312 G8
D
3314 A13
3315 A10
3318 A12
3323 C12
3326 B10
3327 B10
3328 B11
3329 C13
3331 A12
3336 C6
3337 G6
3340 D13
3341 E13
E
3342 E8
3353 E5
3364 H10
3365 I10
LEFT 3366 I11
3367 I12
3377 A9
3378 A8
RIGHT 3379 D3
3380 H5
5300 G8
5301 C8
F 5302 G8
5303 B8
6300 E10
6301 E10
6302 E11
6303 E10
6304 A9
6306 C13
6307 C11
6308 C9
6311 D7
6315 D13
6323 E6
G
6324 E5
6325 B2
6328 I11
6331 A8
6332 A12
7300 E7
7301 B6
7302 F6
7304 B11
7307 A10
7308 B13
7309 B10
7310 B12
H
7313 D12
7326 I10
7328 D4
7329 H5
9261 D7
I
13